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Thread: Object Serialization how it will work?

  1. #1
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    Default Object Serialization how it will work?

    Hi,

    I saved a object in file with serialization method and then i change the class defination and after it i deserialize the object it will work or not?

    //old class
    Class A
    {
    int i;
    }
    //new class
    class B
    {
    int a;
    }


  2. #2
    Super Moderator jps's Avatar
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    Default Re: Object Serialization how it will work?

    Interesting question.
    Try it and see.

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    Default Re: Object Serialization how it will work?

    Hi,

    it does not work.
    As i know when i try to save the object jvm also create hashcode(serialVersionUID ) for our class and also save it with the object.and when i pick the object from the memory after changing the name of the variable at that time hash code generated by the jvm for our class is different from the privous one that is save in memory so jvm throws class cast exception.

    can any body explain what information jvm save with the object during Serialization.?
    and how de serialization work?

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    Administrator copeg's Avatar
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    Default Re: Object Serialization how it will work?

    Quote Originally Posted by ashish12169 View Post
    can any body explain what information jvm save with the object during Serialization.?
    and how de serialization work?
    See The Java serialization algorithm revealed | JavaWorld's Daily Brew

  5. The Following User Says Thank You to copeg For This Useful Post:

    ashish12169 (July 19th, 2013)

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